.el-aside {
  z-index: 3;
  position: fixed;
  background-color: #f4f4f4;
  color: #333;
  text-align: center;
  width: 100px !important;
  height: 100% !important;

  .menu {
    .menu-item {
      transition: 0.3s ease;
      padding: 16px 20px;
      font-size: 16px;
      cursor: pointer;

      .icon {
        font-size: 24px;
        display: block;
        margin-bottom: 8px;
      }

      &:hover {
        background-color: #b1b1b1;
        border-radius: 25px;
      }

      &:active {
        background-color: #818181;
        border-radius: 30px;
      }
    }

    // 给第三个图标添加特定字体大小
    .menu-item:nth-child(3) {
      .icon {
        font-size: 28px;
      }
    }
  }
}